Post Offices List in Carter County, Tennessee:
| Elizabethton Post Office | 901 W Elk Ave, Elizabethton, TN 37643 |
| Hampton Post Office | 433 Highway 321, Hampton, TN 37658 |
| Milligan College Post Office | 101 Neth Dr, Milligan College, TN 37682 |
| Roan Mountain Post Office | 8060 Highway 19 E, Roan Mountain, TN 37687 |
| Watauga Post Office | 105 N 2nd St, Watauga, TN 37694 |